<?php
declare(strict_types=1);
/**
 * MIT License
 *
 * Copyright (c) 2018 Dogan Ucar, <dogan@dogan-ucar.de>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

namespace doganoo\PHPAlgorithmsTest\Graph\graph;


use doganoo\PHPAlgorithms\Datastructure\Graph\Graph\DirectedGraph;
use doganoo\PHPAlgorithms\Datastructure\Graph\Graph\Node;
use PHPUnit\Framework\TestCase;

class DirectedGraphTest extends TestCase {

    public function testAdd() {
        $graph = new DirectedGraph();
        $this->assertTrue($graph->addNode(new Node(1)) === true);
    }

    public function testSubGraphSize() {
        $one  = new Node(1);
        $nine = new Node(9);
        $five = new Node(5);

        $one->addAdjacent($nine);
        $one->addAdjacent($five);

        $two  = new Node(2);
        $four = new Node(4);

        $two->addAdjacent($four);

        $six = new Node(6);

        $graph = new DirectedGraph();
        $graph->addNode($one);
        $graph->addNode($two);
        $graph->addNode($six);

        $this->assertTrue(3 === $graph->numberOfSubGraph());
    }

}